Steam rendering-tank and press.



G. H. STADLEB.

STEAK RENDERING TANK AND PRESS.

APPLIouIoI rILnn 11,111.11, 1909.

948,258. Patented Feb.1,191o.

. wxNEssEs:

, Y 1 NvENoR CHARLES H. STADLER, OF NEW YORK, N. Y.

STEAM RENDERING-TANK AND PRESS.

Specication of Letters Patent.

Patented Feb. 1, 1910.

Application led March 11, 1909. Serial No. 482,743.

To all whom it may concern:

Be it known that I, CHARLES H. STAD- LER, a citizen of the United States, residing at N o. 166 West Ninety-eighth street, in the borough of Manhattan, city, county, and State of New York, have invented a new and useful Steam Rendering-Tank and Press, of

lwhich the following is a specification.

My invention relates to improvements in steam rendering tanks, and the objects of my improvement are, first, to provide a tank for cooking materials out of which grease, oils etc. are rendered, under steam pressure; second, to draw off the grease, oils etc. after the materials have been cooked; third, to drain the water and remaining ease from the materials left in the tank; ourth, to press the materials for the removal of any still remaining oil, grease, water etc. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure l is a front elevation of the tank; F ig. 2 a plan-Aof the tank; Fig. 3 a vertical section of the tank; Fig. 4 a cross section of the tank on line 1 2. l

Similar letters refer to similar parts throughout the several views.

Cylindrical shell A, bottom B,.and cover C, form the tank proper in which the material is rendered.

E is a manhole with removable cover D by which the materials to be cooked for rendering are introduced into the tank.

H is a manhole with hinged cover G throu h which the pressed materials are removed.

W, X and Y are outlets to draw off the ils, grease, etc., after the materials have been cooked. A

S is a stuffing box, R a piston rod, and I the piston used in pressing the cooked materials.

K is an inlet by which steam used for cooking the materials enters the tank.

U is a steam inlet for furnishing pressure against the piston P upon the materials to be ressed.

is a steam outlet to which the safety valve and steam gage are attached.

O is a perforated false bottom, and I the outlet to drain the Water and grease from the cooked and pressed materials.

N' are the lugs used for supporting the tank.

T is a ring to which an air hoist or chain block is att-ached to raise the piston when not in use.

L is the water inlet.

Dotted lines in Fig. 3 showy travel and relative position of the piston when and when not in use.

The operation and use of my invention, are as follows: The material to be rendered is placed in the tank and cooked under steam pressure; after cooking, the oil, grease, etc., are drawn off through outlets W, X and Y. The water and grease are then drained from the materials through the perforated false bottom O, and drawn off through outlet I. The materials having been drained, the piston P is lowered till it rests on the materials, and steam pressure is let into the tank through inlet U. The remaining water and grease is then pressed out of the materials by the pressure of the steam acting against the upper surface of the piston P, and the materials can then be pressed to any required dryness, itbeing regulated by the operator who can increase or decrease the steam pressure as he sees tit. The grease and water coming out of the materials under pressure, pass out through outlet I which remains open while pressing is taking place. The pressing having been ac complished to the satisfaction of the operator, the piston P is raised with chain block or air. hoist attached lto ring T lon end of piston rod R, and t-he remaining mater1als are removed through manhole H.

The term material and materials is applied to designate the solid substancesv placed into tank for rendering purposes, both before and after such rendering has taken place.

I am aware, that prior to my luvention, steam rendering tanks have been made for the purpose of removing oils, grease, etc., from materials. iI-therefore do not clalm the steam rendering broadly; but

I claim:

In a device of the class described. the combination with a tank, of a supply hopper for said tank, a steam inlet, a water 1nlet, a steam heated and operated piston 1n said tank, a plurality of upper outlets, a draining outlet, and means for permitting access to said tank near the bottom thereof.

CHARLES H. 'STADLER VV'Ltnesses:

N. MUELLEE,

CnARLEs HILTON. 

